PROBLEM TO BE SOLVED: To achieve both height adjustment of a lighting device adapted to a growth stage of plants and height adjustment of a cultivation bed in consideration of workability, with a simple structure.SOLUTION: According to the present invention, a distance between a lighting device 40 and a cultivation bed 50 (bed to lighting device distance c1, c2, c3) on each stage can be adjusted adaptively to growth of plants by vertically moving each of support frames 21 to 23. Specifically, despite a configuration in which not only a height of the lighting device 40 but also a height of the cultivation bed 50 can be changed, the distance between the bed and the lighting device can be appropriately adjusted on all stages by a single operation even if the height is adjusted to any level. Because the height of the cultivation bed 50 can be adjusted by vertically moving each of the support frames 21 to 23, each cultivation bed 50 can be also adjusted to an easily workable height responding to a work requirement.COPYRIGHT: (C)2015,JPO&INPIT【課題】植物の生育段階に合わせた照明装置の高さ調整と、作業性を考慮した栽培ベッドの高さ調整との両方を簡易な構造で実現する。【解決手段】本発明によれば、各支持フレーム21~23を上下動させることにより、植物の生育に合わせて各段における照明装置40と栽培ベッド50間の間隔(ベッド・照明装置間隔c1,c2,c3)を調整することができる。すなわち、照明装置40だけでなく栽培ベッド50の高さも変更できる構成でありながら、いずれの高さに調整しても、全ての段において一度の操作でベッド・照明装置間隔を適切に調整することができる。各支持フレーム21~23を上下動させることで、栽培ベッド50の高さを調整できるため、作業の必要に応じて各栽培ベッド50を作業しやすい高さに調整することもできる。【選択図】 図1
